Symbiotic recurrent nova RS Oph in ourburst !!!

Alerts and Monitoring of Novae

Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby Christophe Boussin » Thu Aug 12, 2021 6:41 pm

Hello all,

Finally a clear sky to follow the evolution of the RS Oph outburst !!

Here is my contribution with a spectrum of the Halpha line at high resolution obtained on August 11 at 22 h 26 TU (resolution of 18696, JJ = 2459438.435) with my LHIRES III (grating of 2400 lines / mm, acquisition time of 30 min (3 x 600s)).

rsoph_20210811_935_Christophe Boussin_Halpha.png
Halpha line of RS Oph on August 11th 2021

rsoph_20210811_935_Christophe Boussin_Halpha_zoom.png
Halpha line of RS Oph on August 11th 2021 (zoom)

More than ever, clear skies to all !!

Christophe BOUSSIN
CBO (Newton 200 F/5 / Alpy600 / Atik 314L+ / Atik Titan + Mewlon 180 F/12 / LHIRES III 2400 / Atik 460EX / Atik 314 L+) @ ARAS database
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Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby Dubreuil Pierre » Fri Aug 13, 2021 6:43 am

Bonjour à tous

Un peu de ciel hier soir après des orages dans la journée.

Spectre réalisé avec le spectrographe UVEX(4) G600 750nm RC8 Slit 23µ ...
détails autour de O I 8446
François, si tu à quelques infos sur ce profil ?

_nocacas2021_20210812_811_Pierre Dubreuil.png
Rs Oph proche IR
_nocacas2021_20210812_811_Pierre Dubreuil.png (9.23 KiB) Viewed 4129 times


Et avec H-Alpha

Rs Oph     20210812_860_Pierre Dubreuil.png
Rs Oph H-alpha + IR
Rs Oph 20210812_860_Pierre Dubreuil.png (9 KiB) Viewed 4012 times



j'envois le spectre FIT

Pierre
Last edited by Dubreuil Pierre on Sat Aug 14, 2021 5:31 am, edited 1 time in total.
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Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby Alun Halsey » Fri Aug 13, 2021 8:09 am

Having both my Alpy 600 and Lhires III attached to C9.25 via flip mirror I managed to acquire lo and hi res spectra last night (12th). Acquisition time for Alpy working at f/6,90 seconds (9x10sec) and
acquisition time for Lhires 21 minutes (7x180sec) both instruments with 23 micron slit.

rs oph_20210812T212639.png
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_rsoph_20210812_926_alun halsey.png
_rsoph_20210812_926_alun halsey.png (7.12 KiB) Viewed 4120 times



Alun
LHires III +ATIK 314L/SX Trius pro 694,ALPY 600 + SX Trius pro 825,Star analyser 100,C9.25,Esprit 150 ED Apo,CEM60 and EQ6 Pro.
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Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby Joan Guarro Flo » Fri Aug 13, 2021 10:55 am

Hello,

You can see the general evolution of RS Oph.

J.Guarro.
Attachments
RS OPH4.jpg
RS OPH4.jpg (91.77 KiB) Viewed 4099 times
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Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby David Boyd » Fri Aug 13, 2021 11:53 am

Continuum flux level dropping as the magnitude fades, V=4.88, 5.44, 6.24 for the 3 spectra below.

H-alpha now less sharply peaked, line flux has increased 3 times, peak velocity relative to rest wavelength increased from ~+30 km/s to +120 km/s
H-beta narrower, line flux unchanged, peak velocity relative to rest wavelength increased from ~+160 km/s to +320 km/s
H-gamma narrower, line flux reduced by factor 0.4, peak velocity relative to rest wavelength steady at ~+360 km/s

David

rsoph_20210809_931_D_Boyd.png
rsoph_20210809_931_D_Boyd.png (45.9 KiB) Viewed 4087 times


RS Oph H-alpha.png
RS Oph H-alpha.png (23.44 KiB) Viewed 4087 times


RS Oph H-beta.png
RS Oph H-beta.png (24.17 KiB) Viewed 4087 times


RS Oph H-gamma.png
RS Oph H-gamma.png (23.14 KiB) Viewed 4087 times
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Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby Robin Leadbeater » Fri Aug 13, 2021 10:25 pm

Hi Alun,

Alun Halsey wrote:Having both my Alpy 600 and Lhires III attached to C9.25 via flip mirror I managed to acquire lo and hi res spectra last night (12th).


That is an interesting setup. Do you have a photo? I considered doing the same with my C11 and even bought a 2nd hand 2 inch flip mirror but never got round to trying it so just have the two spectrographs ready wired up and swap them over onto the scope. How well does the EQ6 pro cope? I guess you need some counterweights on the scope to balance it.

Cheers
Robin
LHIRES III #29 ATIK314 ALPY 600/200 ATIK428 Star Analyser 100/200 C11 EQ6
http://www.threehillsobservatory.co.uk
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Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby Alun Halsey » Sat Aug 14, 2021 10:26 am

Hi Robin,

Rather than hijack this thread I will post a few photos of my setup in the "Spectroscopes and Software" section later today. I will add though that there is a lot of weight with the combined spectroscopes/cameras and because of that I prefer to use the CEM60 rather than the EQ6.

Cheers
Alun
LHires III +ATIK 314L/SX Trius pro 694,ALPY 600 + SX Trius pro 825,Star analyser 100,C9.25,Esprit 150 ED Apo,CEM60 and EQ6 Pro.
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Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby Christian Buil » Sat Aug 14, 2021 2:48 pm

Three RS Oph observations night by using Star'Ex at the direct f/5 focus of a a 200 mm Newton (8-inch).

11.84 / 08 / 2021 : infrared by using a 600 lines/mm 750 nm blaze grating (R=1750) (note evolution of OI 8446 line relative to continuum):

Image


12.89 / 08 / 2021 : H-alpha region by using a 2400 lines/mm grating (R=17000, very similar to Lhires III)):

Image


13.84 / 08 / 2021 : UV by using a 2400 l/mm grating (R=6000 near 4000 A):

Image

Note the detection of an emission on the H & K Ca II core lines:

Image

For info, the UV spectrum of Vega by using the same setup:

Image

Christian Buil
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Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby Rainer Ehlert » Sat Aug 14, 2021 6:00 pm

Hi,

Having read a lot about RS Oph I told myself maybe I try it. Maybe, because to the South my neighbour has a Palm tree and that one covers up the whole South :cry:

OK, I was lucky to get RS Oph between two branches :mrgreen:

I took some images on August 10 as well as on August 12. See attached image.

Now I have a question. I guess comparing images with different exposure times is not a good idea, or ? August 10 I used 60 seconds and August 12 I used 120 seconds.

Telescope is a TOA 130 with a 0.6>X reducer with a LISA @25 µm slit and CCD camera QSI520i in binning 1x3.

Thanks in advance for your comments

Rainer


RS_Oph_comparison_b_10-12-082021_NHSA_20210813_et.jpg



RS_Oph_20210810_palmera.jpg
RS_Oph_20210810_palmera.jpg (198.97 KiB) Viewed 3968 times
regards Rainer____Observatorio Real de 14_____MÉXICO_____N 22° W 101°
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Re: Symbiotic recurrent nova RS Oph in ourburst !!!

Postby Christophe Boussin » Sat Aug 14, 2021 6:40 pm

Hello all,

Here is my update for the monitoring of the outburst of RS Oph with a new spectrum obtained the 13th of August at 21 h 56 TU (resolution of 520, JJ = 2459440.4137) with my Alpy 600 and an acquisition time of 375 s (25 x 15 s) :

_rsoph_20210813_914_Christophe Boussin_3700_7565.png
RS Oph on August 13th, 2021
_rsoph_20210813_914_Christophe Boussin_3700_7565.png (100.25 KiB) Viewed 3958 times

rsoph_20210813_914_Christophe Boussin.png
RS Oph on August 13th, 2021 (tentative identification of some lines from PlotSpectra)

Clear skies to all !!

Christophe BOUSSIN
CBO (Newton 200 F/5 / Alpy600 / Atik 314L+ / Atik Titan + Mewlon 180 F/12 / LHIRES III 2400 / Atik 460EX / Atik 314 L+) @ ARAS database
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